Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/001—Combinations of extrusion moulding with other shaping operations
  • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/025—General arrangement or layout of plant
  • B29C48/0255—General arrangement or layout of plant for extruding parallel streams of material, e.g. several separate parallel streams of extruded material forming separate articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/05—Filamentary, e.g. strands
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/266—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/266—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated
  • B29C48/2665—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated allowing small relative movement, e.g. adjustments for aligning the apparatus parts or for compensating for thermal expansion
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/355—Conveyors for extruded articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
  • B29C35/16—Cooling
  • B29C2035/1616—Cooling using liquids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C2791/00—Shaping characteristics in general
  • B29C2791/004—Shaping under special conditions
  • B29C2791/006—Using vacuum
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C2793/00—Shaping techniques involving a cutting or machining operation
  • B29C2793/0027—Cutting off
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C2793/00—Shaping techniques involving a cutting or machining operation
  • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/30—Extrusion nozzles or dies
  • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
  • B29C48/50—Details of extruders
  • B29C48/695—Flow dividers, e.g. breaker plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
  • B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
  • B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
  • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/911—Cooling
  • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
  • B29C48/911—Cooling
  • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
  • B29C48/914—Cooling drums
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/001—Profiled members, e.g. beams, sections
  • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section

Definitions

• the invention relates to a method for the production of plastic profiles, in which at least two profile strands are extruded simultaneously, after which each of the profile strands is cooled and calibrated in at least one calibration tool, the largely cooled profiles being conveyed by a caterpillar take-off and finally processed into profile pieces in a separating device become.
• An extruder with an extrusion tool is used that has two separate openings for the two profiles.
• the calibration tools i.e. the dry calibration and the calibration tanks, are also designed for the simultaneous holding of two parallel profile strands.
• the two profile strands are pulled by a common caterpillar take-off through the calibration tools and further conveyed to a separating device, which is used as a saw or as a knife device, i.e. can be designed as a so-called guillotine.
• a separating device for example, 6 m long profile pieces are produced, from which the required profile sections are subsequently cut.
• a further disadvantage of these known solutions is that starting up the production line is particularly delicate since two profiles have to be passed through the extrusion tools at the same time and have to be erected in succession in order to enable the vacuum in the dry calibration tools to be built up.
• the object of the present invention is to avoid these disadvantages and to provide a method which enables the simultaneous production of two profile strands but is easier to handle and which results in less waste, but which at the same time enables increased flexibility in production planning and better Machine usage allowed.
• Another object of the invention is to provide devices for performing such a method.
• Another object of the invention is to provide a method and a device which also enable profiles of particularly large dimensions to be produced as required.
• a calibration tool group for a first profile strand is independent of one during the production of the plastic profiles
• Calibration tool group for the second profile strand is moved in the longitudinal direction.
• the method is carried out in such a way that, in a first operating mode, the two profile strands are calibrated in separate calibration tools, the withdrawal speeds for the two profile strands preferably being adjustable independently of one another, and that a single profile strand is produced in a second operating mode.
• the basic idea of the present invention is to decouple the manufacturing processes, so that it is possible to produce each of the two profile strands in an optimal manner.
• An important criterion for this is that the withdrawal speeds of the two profile strands are independent of one another. This can go so far that if problems occur during tool changes or the like, the extrusion process on one extrusion line can be shut down to a standstill without influencing or disrupting the production process of the other profile strand. Since the calibration tool groups for the profile strands can be moved in the longitudinal direction, work and settings can be carried out on one strand without disturbing the extrusion process on the other strand.
• Such a common extruder can have, for example, two separate extrusion dies, that is to say extrusion dies, or a common extrusion die with two openings.
• extrusion dies that is to say extrusion dies
• common extrusion die with two openings In order to be able to implement different extrusion speeds, such an extruder should be equipped with a distribution device which makes it possible to distribute the mass flow of the plastic melt in a selectable ratio between the two extrusion openings.
• the two profile strands are produced on two mutually independent extruders. In this way it is possible to achieve an actual independence of the production processes of the two profile strands.
• the two profile strands are calibrated in calibration tools which are arranged on a common calibration table.
• the common calibration table the base of which is essentially that of a conventional calibration
• the units for water supply and disposal and for vacuum supply are arranged as usual.
• two independent tool holders are attached to the calibration table, which carry the calibration tools.
• Dry calibration tools and calibration trays are understood as calibration tools in the sense of the invention.
• the calibration troughs are usually designed as vacuum tanks, in which the profile is guided through corresponding panels, which are used for calibration, the contact of the profile with the panels being ensured by the vacuum in the tank.
• a turbulent flow of cooling water which is guided in the longitudinal direction of the tub through corresponding openings in the panels, ensures that the profile strand cools and solidifies as quickly as possible, which is necessary for achieving the corresponding production performance.
• the individual calibration tools can be fastened on separate tool holders, which are arranged one behind the other in the longitudinal direction, or on a common tool holder.
• the two profile strands are conveyed in the first operating mode by a common caterpillar pull-off with two independently driven pairs of caterpillars, and that the individual profile strand second operating mode is conveyed jointly by both pairs of caterpillars.
• the conveyor speed of the caterpillar take-off defines the extrusion speed, which is the essential parameter for the achievable performance on the one hand and the quality of the profile on the other.
• the two profile strands are processed into profile pieces by a separating device comprising at least two saws or knife devices which can be moved independently of one another.
• a separating device comprising at least two saws or knife devices which can be moved independently of one another.
• a particular increase in the flexibility of the method according to the invention can be achieved in that either two profile strands are produced in parallel or only a single profile strand.
• By appropriate design of the individual components of the system it is possible instead of two smaller profiles to produce a single profile with smaller or with correspondingly large dimensions, so that a particularly versatile use of the extrusion line according to the invention is possible.
• the invention relates to a device for cooling and calibrating plastic profiles for carrying out a method as described above, with a calibration table on which at least one tool holder is attached.
• such a device is characterized in that at least two tool holders are attached to the calibration table, which are used for the detachable attachment of calibration tool groups and which can be moved independently of one another in the longitudinal direction and preferably in the transverse direction.
• the extrusion tools are movable in the longitudinal direction relative to the extruder. This is usually achieved by moving the entire calibration table in the extrusion direction.
• Such a mobility of the calibration table in the longitudinal direction can also be provided in the calibration device according to the invention.
• the two tool holders can also be moved at least in the longitudinal direction in order to also facilitate manipulations on the tools for one profile strand without having to influence the production process on the other profile strand. Movement in the transverse direction is preferably also provided, so that the distance between the two profile strands from one another can be adapted to the respective circumstances.
• a calibration tool group in the above sense is understood to mean the entirety of the dry calibration devices and the calibration tanks, which are selected in a manner known per se depending on the requirements of the respective profile.
• the tool holders are designed to hold at least one dry calibration device and at least one calibration tank.
• a particularly simple and robust calibration can be achieved. It is also possible, if necessary, to remove all tools at the same time when changing tools and to build up new tools in the same way in a single step.
• the present invention relates to a device for conveying plastic profiles with a caterpillar take-off, on which two pairs of caterpillars are provided next to one another in parallel.
• such a device is characterized in that the pairs of caterpillars can be moved independently of one another, in order to selectively convey one profile strand or collectively a single profile strand.
• a preferably removable partition is provided between the two pairs of crawlers.
• a caterpillar haul-off must always be designed with a cover which, when closed, prevents reaching into the caterpillar haul-off.
• Appropriate safety circuits must ensure that opening the cover brings the caterpillar pair to an immediate standstill in order to prevent accidents at work.
• two pairs of caterpillars are provided, which are accessible from both sides via a cover.
• opening one hood only causes the caterpillar pair below to come to a standstill.
• the partition wall described above is provided.
• the partition is preferably removable so that the pairs of caterpillars can be connected to one another to promote a single profile. In such a case, there is no longer any danger, since in such a case both pairs of caterpillars can be stopped when a single cover is opened.
• the two pairs of caterpillars can be connected mechanically by a coupling or by a corresponding electronic control of the drive.
• the invention further relates to a device for severing plastic profiles with a base body on which at least one severing device can be moved in the longitudinal direction.
• the separating devices can be designed as saws or as so-called guillotines, which separate the profile sections without cutting. It is essential that the two separating devices can be moved independently of one another, so that each profile strand can be processed into profile sections of the desired length.
• the length of an extrusion line is generally limited. In order to avoid possible space problems here, it is particularly preferred if two separating devices are arranged next to one another.
• a third separating device is arranged upstream or downstream of two separating devices which can be moved independently of one another. In such a case, the two separating devices which can be moved independently of one another are shut down, and the individual profile is separated by the third separating device.
• FIG. 1 shows an extrusion line for carrying out the method according to the invention in a side view
• Fig. 2 shows the extrusion line of Figure 1 in plan.
• FIG. 6 and FIG. 7 a device according to the invention for conveying plastic profiles in different operating states in section;
• Fig. 8 is a profile saw in section.
• the extrusion line in FIGS. 1 and 2 consists of an extruder 1, a calibration table 2 for holding an individual calibration tool 3 or two calibration tool groups 3.1 and 3.2, a caterpillar take-off 4, a first take-off separating device 35 and a second double separating device 6.1, 6.2.
• the calibration table 2 has two tool holders 2.1, 2.2 which can be moved independently of one another, on each of which separate calibration tool groups 3.1, 3.2 are arranged.
• the calibration tool groups 3.1, 3.2 are composed of several dry calibration tools 13.1, 13.2, an upstream calibration tank 23.1, 23.2 and a downstream calibration tank 33.1, 33.2.
• the tool holders 2.1, 2.2 can be moved independently of one another both in the longitudinal direction, that is to say in the sense of the double arrow 8, and in the transverse direction, that is to say in the sense of the double arrow 9.
• the two tool holders 2.1, 2.2 can be coupled to one another in order to be able to jointly hold a single calibration tool group 3 for the calibration of an ordinary profile. It can also be seen from this figure that the two tool holders 2.1, 2.2 can be adjusted in height in the direction of the double arrows 10.1, 10.2 in addition to the mobility in the transverse direction according to double arrow 9.
• FIG. 4 corresponds to that of FIG. 1 with the difference that a tool group 3 for a profile with particularly large dimensions is built on the tool holders 2.1, 2.2.
• the unit from the tool holders 2.1, 2.2 can also be pivoted together in the direction of the double arrow 11 about the profile axis.
• the height adjustability is shown by the common double arrow 10.
• separate calibration tool groups 3.1, 3.2 are built up on the tool holders 2.1, 2.2. These are independent of one another in the direction of the double arrows 9.1, 9.2; 10.1, 10.2; 11.1, 11.2 laterally displaceable, height adjustable or pivotable about the profile axis.
• the units for water supply, water disposal and vacuum supply are mounted in the calibration table 2 in a manner known per se, but an independent controllability is realized for the two calibration tool groups 3.1, 3.2.
• FIG. 6 shows a cross section through a caterpillar take-off 4 which has two separately controllable pairs of caterpillars 7.1, 7.2 which are arranged next to one another.
• the caterpillar take-off 4 has two covers 14.1, 14.2, which can be opened to allow access to the caterpillar pairs 7.1, 7.2.
• the pairs of caterpillars 7.1, 7.2 are coupled to one another in order to convey a single profile strand 20 of correspondingly large external dimensions.
• a partition 15 is in a raised state so as not to collide with the profile strand 20. Since the pairs of caterpillars 7.1, 7.2 are connected in terms of movement, it is ensured that when one of the covers 14.1, 14.2 is opened, both pairs of caterpillars 7.1, 7.2 are shut down, so that there is no danger to the operating personnel.
• the partition 15 is lowered between the pairs of caterpillars 7.1, 7.2, so that the operating personnel can reliably prevent the caterpillars 7.1, 7.2 from reaching through to the possibly moving pair of caterpillars 7.2, 7.1.
• FIG. 8 shows a device for separating plastic profiles with a base body 6 and two separating devices 6.1, 6.2 which can be moved in the longitudinal direction separately from one another, each with a saw 16.1, 16.2. In this way, the profile strands 20.1, 20.2 can be separated independently of one another.
• a conventional separation device is provided, in which a separation device 25 with a saw 35 is provided on a base body 5 in order to cut off either two profile strands 20.1, 20.2 simultaneously or a single profile strand 20.
• the present invention makes it possible to double the output of an extrusion line with a comparable space requirement, without having to accept the disadvantages of a rigid coupling of two separate extrusion processes.
• Another advantage of the invention lies in the increased flexibility depending on the dimensions of the profiles to be produced.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

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• 2002
  • 2002-10-25 AT ATA1623/2002A patent/AT414344B8/de not_active IP Right Cessation
• 2003
  • 2003-10-23 AT AT03757518T patent/ATE363376T1/de active
  • 2003-10-23 EP EP03757518.0A patent/EP1554104B2/fr not_active Expired - Lifetime
  • 2003-10-23 AU AU2003273601A patent/AU2003273601A1/en not_active Abandoned
  • 2003-10-23 WO PCT/AT2003/000320 patent/WO2004037516A2/fr not_active Ceased
  • 2003-10-23 CA CA002503428A patent/CA2503428A1/fr not_active Abandoned
  • 2003-10-23 US US10/532,120 patent/US20060145389A1/en not_active Abandoned
  • 2003-10-23 ES ES03757518T patent/ES2285176T3/es not_active Expired - Lifetime
  • 2003-10-23 DE DE50307385T patent/DE50307385D1/de not_active Expired - Lifetime
  • 2003-10-23 CN CN200380101851A patent/CN100575052C/zh not_active Expired - Fee Related

Non-Patent Citations (6)

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